Message:23393 In: SPACWX.USA
From: N4SDDate: Mon, 01 Jun 26 12:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <14856_N4SD>
Path: N2MH4|N2MH|N3MEL|KA3VSP|N4SD
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FXXX10 KWNP 011231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Jun 01 1230 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
# 3-Day Forecast
#
A. NOAA Geomagnetic Activity Observation and Forecast
The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 01-Jun 03 2026 is 4.00 (below NOAA
Scale levels).
NOAA Kp index breakdown Jun 01-Jun 03 2026
Jun 01 Jun 02 Jun 03
00-03UT 2.00 2.67 2.00
03-06UT 1.00 2.33 3.33
06-09UT 1.67 2.00 4.00
09-12UT 1.67 1.33 3.00
12-15UT 2.33 1.33 2.67
15-18UT 2.00 2.00 2.33
18-21UT 2.00 2.00 2.33
21-00UT 2.33 2.33 2.67
Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No
significant transient or recurrent solar wind features are forecast.
B. NOAA Solar Radiation Activity Observation and Forecast
Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.
Solar Radiation Storm Forecast for Jun 01-Jun 03 2026
Jun 01 Jun 02 Jun 03
S1 or greater 5% 5% 1%
Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Jun 01-Jun 03 2026
Jun 01 Jun 02 Jun 03
R1-R2 25% 25% 20%
R3 or greater 5% 5% 1%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
on 01-02 Jun, with a slight chance for R1-R2 events on 03 Jun.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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